Spotted!

Jay-Z with Stephen J. Dannhauser, President & CEO, New York Police and Fire Widows and Children's Benefit Fund at the press conference announcing Jay-Z will ANSWER THE CALL by performing a benefit concert at New York City's legendary Madison Square Garden on Friday, Sept. 11.

Jon Gosselin celebrated his last night in Las Vegas in style with dinner at STACK Restaurant and dancing at JET Nightclub, both at The Mirage. The notorious reality star took his mother and four friends to dinner at the American bistro within the hotel and casino, where they enjoyed lobster tacos and sashimi, downed with pomegranate martinis and vodka red bulls. Following dinner, the father of eight then headed to JET Nightclub (sans mom) where he continued sipping vodka red bulls and toasted with Dom Perignon while catching Beacher's Madhouse show and being approached by many women who wanted to get to know the new playboy.

Entourage star Jamie Lynn Sigler went to Japonais in NYC for dinner sans boyfriend Jerry Ferrara. She showed up with two friends, a guy and a girl who looked like they were a couple. Jamie looked better than ever in a black boyfriend blazer and skinny jeans. The threesome were having a great time laughing and ordering rounds of champagne. They told the server that they were celebrating so to keep the champagne flowing. They also mentioned that they wanted to try the best dishes on the menu so the server brought out Hawaiian Hamachi, Avocado Maki, Nigiri Hamachi and Akami, Pamko Sushi Roll and the Rock.

Nicky Hilton with Final Destination star Andy Fiscella at the film's Hollywood premiere.

Paris Hilton at Prive Vegas with back-on beau Doug Reinhardt.

Chace Crawford laughing at Lily Pond in East Hampton and taking shots of Patron Platinum at Georgica Restaurant and Lounge.

Queen Latifah at Greenhouse in NYC for the Wright wrap party.

Nick Lachey with brother Drew Lachey and Matt Leinart at W Scottsdale’s Shade bar.

Dancing with the Stars pair Louie Vito and Chelsie Hightower getting Fake Bake tans and primped at the Parlour on 3rd Salon in L.A. before a cast bonding party at Coco de Ville.

Jennie Garth hosting a Trident Event at The Children’s Dental Center of Greater Los Angeles to welcome the Children's Health Center Of Greater LA To The Smiles Across America Family.

Ashlee Simpson sipping Vita Coco coconut water in between takes on the set of Melrose Place.

Joss Stone and Gavin DeGraw playing at the Barefoot Wine Beach Rescue Concert in Asbury Park, N.J. to benefit the Surfrider Foundation.

Rihanna at Katy Perry’s L.A. concert after party at hwood.

One Tree Hill star Chad Michael Murray telling Penn & Teller he gives the crew the new season of their Showtime series, Penn & Teller: BS! on DVD every Christmas, while at their show at the Rio All-Suite Hotel & Casino Aug. 29.

Shia LaBeouf and his new girlfriend, Carey Mulligan, holding hands during a meal at new Mexican cantina Mad Dog & Beans in NYC’s Financial District.

Avril Lavigne enjoying a Nina Fresa cocktail during lunch yesterday at Sushisamba Park, while sharing Kobe beef dumplings, rock shrimp tempura and sushi with a friend.

Jon Bon Jovi drinking local rosé from Wolffer Estates while talking business with a group of guys at Townline BBQ in Sagaponack, N.Y.

Soprano's star Rob Iler hit the Las Vegas party circuit Aug. 29 starting with dinner at hotspot Yellowtail, where executive chef Akira Back prepared specialty Japanese dishes for the actor and an entourage of his friends. Iler and his boys headed to the clubs, but not before stopping to play a few quick rounds of blackjack. He arrived at The Bank Nightclub at Bellagio $500 richer, where he partied into the wee hours of the morning.

Former female pro wrestler and Dancing With The Stars alum, Stacy Keibler kicked-off 72 hours of Superdraft, a fantasy football extravaganza in Las Vegas at JET Nightclub. While there, the Las Vegas Convention and Visitors Authority awarded Keibler with her very own Superdraft Jersey with her last name on the back.

Former Baywatch babe Jeremy Jackson spotted on the set of Minkow where he plays an FBI agent opposite James Caan.

Kelsey Grammer at the Birthday Celebration for Fred Segal Benefitting the Boys & Girls Club of Malibu Teen Center.